Apparatus for mixing the ingredients of concrete and other substances.



. TWINBERROW.

APPARATUS FOR MIXING THE INGREDIENTS OF CONCRETE AND OTHER SUBSTANCES.

APPLICATION FILED APR.29, 1911.

Patented July 23, 1912.

4 SHEBTSSHEET 1.

J. W. TWINBERROW. APPARATUS FOR MIXING THE INGREDIENTS OF CONCRETE AND OTHER SUBSTANCES.

APPLICATION FILED APR.29, 1911.

Patented July 23, 1912.

4 SHEETS-SHEET 2.

J. W. TWINBERROW. APPARATUS FOR MIXING THE INGREDIENTS 0F CONCRETE AND OTHER SUBSTANCES. APPLICATION FILED APB.29. 1911.

1,033,218. Patented July 23, 1912.

4 SHEETS-SHEET 3.

J. W. TWINBERROW. APPARATUS FOR MIXING THE INGREDIENTS 0F CONCRETE AND OTHER SUBSTANGES.

APPLICATION FILED APR.29, 1911. 1,033,218 Patented July 23,1912.

4 SHEETS-SHEET 4.

ZZ/Z'UZGQMM. do/m Wu/s hm Twi b J1 itomey.

UNITED STATES PATENT OFFICE.

JOHN WULSTAN TWINBERROW, OF WORCESTER, ENGLAND.

APPARATUS FOR- MIKING THE INGREDIENTS OF CONCRETE AND OTHER SUBSTANCES.

Specification of Letters Patent.

Patented July 23, 1912.

Application filed April 29, 1911. Serial No. 624,238.

To all whom it may concern:

Be it known that 1, JOHN WU sTAN Twnvnnnnow, asubject of the King of Great Britain and Ireland, and residing at Elbury House, 'Worcester, in the county of \Vorcester, England, have invented a certain new, useful, and Improved Apparatus for Mixing the Ingredients of Concrete and other Substances, of which the following is a specification.

' Thisinvention relates to apparatus for the mixing ofthe ingredients of concrete and like materials, or for the washing or cleansing of the same. A

A frequent practice, when concrete and like materials are concerned, has hitherto been to mount the mixing apparatus at a height above the ground in order to give room for a receptacle to be placed at a lower level for the receipt and subsequent removal of the mixed material. This method necessitates additional labor as the ingredients must be lifted up to the level of the mixer and further the apparatus having once been set up cannot easily be moved to the spot at which the mixture is to be deposited, with the result that the mixed concrete has frequently to betransported to a considerable distance before being used involving further expense and labor, and also the possi bility of the material commencing to set before arriving atits destination. It has been proposed to overcome these disadvantages by the provision of a receptacle, capable of rotation for the purpose of effecting the mixing of the ingredients placed therein, the resultant mixture being transported to its destination in the same receptacle by means of the appliance used to effect its rotation.

The present invention has for its object to provide a-simplified form of such apparatus and consists principally in the provision of a receptacle simple in construction, readily filled, handled'and discharged and adapted to be oscillated for the purpose of effecting the mixing and incorporation of the ingredients placed therein, the oscillation being effected by the appliance employedfor the purpose of transporting the resultant mixture to its destination whether at, above or below ground level.

The invention further comprises the various details hereinafter more particularly set forth in the claims.

In the accompanying drawings which form a part of this specification, Figure 1 is a side elevation of one form of receptacle showing one means of supporting it when being oscillated. Fig. 2is a front elevation of the receptacle shown in Fig. 1. Fig. 3 is a side elevation of another form of receptacle showing a second means of supporting the receptacle during oscillation. Fig. 4 is a front elevation of the receptacle shown in Fig. 3. Fig. 5 shows another modification. Fig. 6 is a detail. of the modification shown in Fig. 5. Fig. 7 is a view of a form of a cross bar. Fig. 8 is an elevation of a complete operative device constructed according to the present invention.

In carrying my inventioninto effect in one convenient manner, as illustrated in Figs. 1 and 2, I provide a skip or receptacle a, constructed of steel or iron plate or other suitable material, of considerably greater capacity than is necessary to contain the charge of materials to be mixed. This skip 0r receptacle is provided with an opening for filling and discharging, closed by means of a water-tight door, Z), which is held in its closed position by the screw, 0 passing through the lever d,thele\-'erdbeingpivoted at 0, its other end being secured by the link f, which is pivoted at one end to the skip.

At one end of the skip or receptacle a isa tank 9 to contain water or any required liquid ingredient in such cases as it is considered desirable to keep same separate from the remainder of the charge, provided with an inlet h and having outlet pipes i communicating with the mixing chamber, the supply of liquid being controlled by the valves, j. The tank 9 may also be provided with an air valve, (not illustrated) when'required.

In the mixing chamber are arranged a number of blades or bars, in, which may be of any convenient size and shape, the form preferred consisting of a. rectangular bar so twisted that the central portion is at an angle to the two ends as shown in Fig. 7, this form being found to break up the mix; ture in the best way and to cause the most intimate mingling of the ingredients. These bars may .be secured to the sides of the skip by bolts or rivets or in an other suitable manner. To one end receptacle is attached a ring or. hook I by means of which the skip can be attached to a crane or like appliance, the other. endbeary of the ing trunnions m about whioh,-when suitably supported, the receptacle can'be cansed to a oscillate. To the jib 3 or other convenient I quired quantity of raw materials. At the part of the framework of the crane or the like is attached a frame orbrackets n carryingbearings 0, adapted to receive the trunnions m.

To the lower end of the skip or receptacle are attached the members p, which are so shaped that when the skip is lowered they meet the ground first and cause the skip always to come to rest with the side in which the filling and discharging opening is situated uppermost. The shape of each of the members 7) is such that when the skip is hanging free the apex of the curve to which it is bent is the lowest point of the receptacle and furthermore the apex is not in the vertical plane passing through the center of grant of the apparatus but .is displaced towar that side of the receptacle in which is situated the filling opening.

In the modification illustrated in Figs. 3 and 4, the receptacle has two openings closed by water-tight doors, 6, and b, the door b being intended for use m'filling and thedoor b for discharging. In addition a second method of supporting the trunnions m, which in this casev are difi'erently positioned to those shown in Figs. 1 and 2, is illustrated, the bearings 0 in this case being attached to links or chains 9 hanging from the jib of the crane. To the bearings 0 may be attached handles 2, to assist the operator in the engagement of the bearings and trunnions. This means of supporting the trunnions is of course equally applicable to the form of skip shown in Figs. 1 and 2. There are also various other slight alterations in details, for instancefthe ring or hook Z is shown replaced by a swinging bail pivotally attached to the skip by the trunnions m and a. differentmethod of holding the doors I; and b tightly closed is illustrated, the fastening consisting of a cotter to working in slotted brackets w, y, the brackets on being attached to the door I) while y is fixed to the side of the skip or receptacle a.

Figs. 5 and 6 illustrate a further modification in which the trunnions m and m are replaced by shafts .9 running through the mixer. These shafts may be provided with suitable blades r, two forms of which are shown in Fig. 6,.which,if the shafts be held from rotation, will as the receptacle oscillates, move through the mixture and so assist in the incorporation of the ingredients. For the purpose of insuring water-tight joints at the points where the shafts s roect throu h the walls of the skip a stu 'ng boxes t 0% usual construction may be employed.

The operation of the apparatus may now be described. The skip or receptacle'a, havin g been placed on the ground or even in a shallow hole, the door I) is opened and the mixing chamber charged with the resame time the tank g may be filled or par-v tially filled as required through the inlet h. The door or doors 6 and the inleth are then closed, the book 1 or the crane or like appliance engaged with the ring or bail Z and the skip raised from the ground by winding the crane-bond .2 on to the Windlass 4 in the usual manner by means of the engine 5 which is supplied with steamby the boiler" 6. The trunnions m or ends of the shafts a are thenengagedwith the bearings 0, this adjustment being effected in some cases by the use .of a suitable system of levers or similar device which permits the crane driver to operate the links 9 from the platform of the crane. In such cases the bearings 0 are made in the form of a hook and 'after raising the skip, the crane driver adjusts the links 9 so that the bearings 0 are directly beneath the trunnions m and then lowers the skip till the trunnions and bearlugs engage. Similarly where the trunnions are supported by a framework such as min Fig. 1, this framework can be made adjustable for the same purpose. The trunnions and bearings being engaged the skip may now be oscillated by alternately raising and lowering the crane bond 2, so causing the charge to fall fromv end to end, the in gredients becoming mixed owing to the scat:

tering efl'ect of the cross bars or blades is.

If preferred the first few oscillations can be made with the dry materials, the valves j can then be opened and the oscillation resumed for as long as is considered necessary. The trunnions are then disengaged when the skip can be suspended by the crane over the spot where it is required to deposit the mix ture, either. above or below ground level, the

door, or if there is more than one door in the receptacle, the most convenient door for discharging, being opened for this purpose.

The crane then returns, deposits the empty skip, picks up another which has in the meantune been charged and the process of mixing is repeated. i

It is to be understood that my invention isnot to beconfined to any particular size or shape of receptacle nor to any particular details of construction as these 'mayall be variously modified to suit particular cases without departing from the spirit of my invention. Further I do not confine my invention to any particular type of crane or the like as any suitable appliance of this nature may be employed. The same apparatus may also beused for the purpose of washing or cleansing' sand gravel or other materials, the method of'working being the same as that already described formixing concrete and the like, an additional drain ofi' cock for the discharge of the dirty water being provided when re uired.

Having now describe my invention what I claim as new and desire to secure by Let-- ters Patent is V 1. In apparatus for mixing concrete, the combination ofa receptacle adapted to contain the ingredients a mechanical appliance for imparting oscillatory motion thereto and transporting the mixture bearings attached to said appliance and projections on.

said receptacle adapted to engage with said bearings.

2. In apparatus for mixing concrete, the combination of areceptacle adapted to contain the ingredients, a plurality of bars fixed therein and a mechanical appliance for imparting oscillatory motion to said receptacle and transporting the mixture.

3. In apparatus for mixing concrete, .the combination of a receptacle adapted to contain the ingredients a plurality of bars fixed therein, a mechanical appliance for imparting oscillatory motion to said receptacle and transporting the mixture, bearings attached to said appliance and projections on the V receptacle adapted to engage with said bearings.

4. In apparatus for mixing concrete, the

combination of a receptacle adapted to contain the ingredients,a tank secured-thereto, a mechanical appliance for. imparting oscillatory motion to the receptacle, and transporting the mixture, bearings attached to combination of a receptacle for containing the ingredients, a -bail attached 1 thereto, trunnions on said receptacle, .a mecha'nical appliance engaging with said bail for oscillating the receptacle and transporting the mixture and bearings, secured to said appliance, adapted to engage with said tiun: nions. j 7. In apparatus for concrete, the. combination of a receptacle for containing the ingredients, a bail attached thereto,

trunnions on said receptacle, a tank secured to the receptacle, .a plurality of bars fixed in said receptacle a mechanical appliance engaging with said bail for oscillating the receptacle and transporting the mixture and bearings, secured to said appliance, adaptedto engage with said trunnions.

8. In apparatus for mixing concrete, the

combination "of a receptacle for containing the ingredients, a bail attached thereto, a tank secured to the receptacle, pipes cona,

necting the tank-to the receptacle, valves in said pipes, a plurality of bars fixed in the receptacle, trunnions on the'recept-acle, a mechanical appliance engaging with said bail for oscillating said receptacle and transporting the mixture links secured at one end to saidappliance and bearings, attached to the other end of said links, adapt.-

ed to engage the trunnions on the receptacle. v, e

9. In apparatus for mixing'concrete, the combination of a receptacle for containing the ingredients, projections onsaid receptacle, a mechanical appliance for oscillat ing said receptacle and transporting the mixture, a doorin said receptacle,' and curved bars secured to. the outside of said receptacle to bring sai'd door uppermost when the receptacle is to be filled. I

10. In apparatus for mixing concrete, -the combination of a receptacle for containing the ingredients, a bail attached thereto, a

tank secured to the receptacle, pipes connecting the tank to the receptacle, valves in receptacle, trunnions on the receptacle, a mechanical a pliance for oscillating sa1d links secured at one end'to said appliance and-bearings, attached to the other end. of

said 1inks,'means for engaging said bearings with the trunnions on the receptacle, a door in said receptacle and curved bars secured to the outside of said receptacle to bring said door uppermost when t-he'receptacle is to be filled.

In testimony whereof 'Ihave signed my name'to this specification in the presence of two subscribing witnesses.

JOHN WULSTAN rwmrraaow.

Witnesses:

F. H. EnMUNns, B. PENNINGTON.

said pipes, a plurality of bars fixed in-the receptacle, a d transporting the mixture, Y 

